I understand that keyboards without rollover are better, thats is obvious, there is no argument why cheap rollover keyboard could be any better. My point is, that thing is just little overhyped, another excuse to buy another expensive keyboard
People tend to fool themselves that new keybaord where you can press 20 buttons will improve their performance. In theory it helps, in practice - not so much (if you compare it to what is used by unquestionably best sc players in the world).
Another thing is what game is considered. Starcraft 1 is pretty brutal to keyboards, but as someone said before, there are games that force you to press more keys simultaneously. As for sc2, it there is no way it could beat sc1 as keyboard benchmark, since lots of macro aspects were simplified, you can select large groups of units (no limit like sc1), there is automining (no need to separate workers manually), and you can for example select multiple buildings at once, so giving production orders is much easier (in sc1 you have to switch each building manually ect).
Anyway, I agree that "better keyboards are better", there is no need to copy other users just because they are good players for example. But it also proves that key rollover problem is often overrated and it doesn't make that much of a difference if it comes to reality. Keyboard geeks will obviously attack person who says that because it is like blasphemy for them, but you have to admit that choices of group of players that practice ~14 hours per day speak for themselves.
