For me terran is OP cause the macro is easy. I dont have to constantly spit on my hive or warp warp warp. just memorize some 1S2DDAA3T to constantly churn out scv MMM and tanks. For terran Macro > micro. infestor? meh... i have tons of MMM rolling in for backup. Unless the zerg is good in micro i can win cheap with just simply good macro. yeah it is cheap but it works.