Markeloff has been top15 in 2013, but struggled to find his skill in csgo, although he played in majors.
First, why do you bring a player (top 1 in cs1.6) into the cs:go forum? All of the people are talking about csgo, even the thread is in csgo part of hltv.
Secondly, yes of course graphics sucks in 1.6, but I don't see your point considering markeloff. I only see lots of problems with cs 1.6 that you state. What I am getting at is that you lost a point where you should have said "because 1.6 was easier version of csgo, markeloff isn't that much of an unbeatable top1".
As of for the third, I will imagine you managed to evaluate your point and what you meant I stated in previous sentence. So replying to this idea of "weak cs" I would say that at the time he was playing the cs lvl was more into shooting. The tactics sucked, we can see that because old players never lack good shooting, they rather have problems adapting to the game style of new players that apart from that have good shooting skills aswell. What I am getting at is that it is irrelevant to compare top1s of cs 1.6 to csgo because the level is different. He is not "the worst top1" just because he didn't maintain his first spot coming to a new different game. He is not "the worst top1" because his achievements don't strike to you. At his prime, at his top, he was the best in the world. And there HAS BEEN noone close to getting that spot at the time. I consider that a true top1, and the comparison of cs1.6 and csgo here is having no place to be.
Hope I made my point clear