for a start, this is just my opinion.
The game is not as simple as counter strike. don't get me wrong, if you have a good aim in counter strike. lets say the aim a normal supreme player has you should be able to absolutely obliterate some rainbow six players. the way of aiming on the other hand is completely different because almost all fights in this game are short or very short ranged. medium fights do happen some times but most of the times they do not.
you need to scope in with every weapon. some might say that this is more realistic but i disagree, i am a air soft player my self and i can perfectly shoot a target with a pistol without actually ''aiming'' for it. i am personally not a fan of the ''all weapons need a scope'' thingy but i can live perfectly fine with it. non the less that i love counter strike more for not having this scope on all weapons thing.
camera's, again as with the scopes. most people will say that this is more realistic. Yes in modern warfare it is more realistic and i think that camera's are a big good thing in siege, it levels the skill ceiling well and does give the game a giant tactical aspect. Counter strike is not modern warfare, its a quick playing active shooter that is pure built on being able to think like your enemy and aiming as good as possible.
pay 2 win, this game is not really pay 2 win. yet i will not disagree with someone saying it is. the game is ''paying to get an head start'' you can buy ingame currency with real money, from that currency you can buy ''operators'' that have special abilities. if you do not spend the money you will need to play a couple of hours before you can play a different operator, cause by playing you will also get this ingame currency. not speaking about the fact that you have to play with an operator to get a feel for it and this will also take you a bit of hours, some people more hours then others and it depends on the operator per person.
the soundbox is terrible, ubisoft still have to fix a lot in the soundbox. this is obviously my opinion again, but its an opinion that a lot of players and pro's agree with. its basically a meme that instead of cs on nuke having the worst sound box the one of siege is actually worse. i am currently playing 7.1 surround sound and get were the enemies are most of the time not by actually hearing the steps, but by combining the steps with logical thinking.
there is no mini map. for a lot of people this is another argument on why this game is more realistic than counter strike, also the fact that there is no mini map levels the skill ceiling cause you really need to play maps over and over again to know what angles to hold, fire, what walls to break, reinforce or what hallways to rush and what hallways to be careful.
the game itself is still very glitchy, i had in the last 3 weeks more as 6 incidents where either me or one of my teammates you stuck, fell trough a black hole, died because of ??, glitched trough the map after dying or (and this is the most annoying one) after someone died there body got glitched into a wall or door or fence, the body then hovered above the ground destroying entire angles. this exact reason is why i think that the game is not esports ready yet.
because of the fact that every map has more than one level (which is good for gameplay etc) its hard to follow matches if you are watching them, the game is really in some ways to complicated and the simpleness of counter strike makes it less hard to follow and understand, yet cs plays are more impressive cause aim is a bigger factor and the one level on the cs maps (nuke ofcourse not) it makes for a really good overview. rainbow as i said earlier is mostly close and short fights, no wide angles and even tho i have seen some sick one tap flicks by beauso and shaiiko its nothing compared to simple's falling awp or colds jumping apps play.
The community is really toxic, even tho you think that you cannot get it any toxicer that russians in cs. you are wrong, even with all the rules Ubisoft implanted in its game about swearing and getting banned for saying words like ''nigger'' and ''cancer'' (which is not bad) there is still a lot of toxicness going on and smurfing is abused AF. you think there are a lot of smurfs in cs? again! you are wrong.
if you have any Questions feel free to ask. the argument that i am saying all this because i am shit is not really fair. i did not play ranked yet as i have played only unranked in my first 100 hours. but playing with 3 2 season dia's and still being able to frag just like them tells me that having played csgo for a long time does do good for your aim in other games.
there is also the habbit of players to spawn peak, with some weapons in combination of an ecog scope its really not stoppeable. its really annoying sometimes.
I enjoy the game, because even tho i am able to frag on a level my fellow friends are able to i still feel like a massive noob. i don't know the maps, spots or rotates and i mostly room around a bit just looking for peeps to fight.
rainbow is a more realistic game without a doubt, but its not necessarily true that more realistic is better.