That is a really weird thing to say, 4x fundamentally is based around armies and army compositions where each unit does need to have a counter, and it is very much about strategizing and countering the enemy units while also destroying the enemy base.
RPG really doesn't have that limitation, and most of the limitations can be bypassed lot more easily, and you can build some incredibly broken characters with the right equipment, spell sets and skills. If anything, RPG characters should be stronger, to keep the stakes on Mynogra side, going against much stronger opponents.