Agreed, but I think s1mple would struggle more.
When you talk about ingame IQ, I think you have different types of IQ.
Zywoo has a better overall game sense, to understand what's the best for the team.
S1mple has a better immediate game sense, thus he makes more flashy plays.
In this sense, I think zywoo would struggle less than s1mple if they got each other's role, because zywoo has potential and skills to carry, but he sacrifices himself a lot for the better game plan (like being entry as TR or playing with the worse weapon).
S1mple on the other hand, he could do zywoo role, but a lot of his impact in game happens because he can trade kills very fast, so, usually his teammates are the sacrifices for him. Taking this for him would be very harsh.