The answer to that is not a simple "Yes" depending on who is asked.
This is because the two most basic strategies on the offensive side of warfare will require either one but not the other:
general strategy 1- long range/missile barrage type where bishops are most essential
general strategy 2- short range/hand-to-hand combat type where knights feature prominently
I think that proper management of these is one of the keys to success in this game. But for the average player, ONE of these 2 playing styles will be dominant for him/her and for each opponent he/she shall face thereafter. These things can only be ascertained through play as there is no foreknowledge, and i guess that is what makes us average because either strategy standing alone will have its pros and cons despite the stronger tendency the average player will have towards one strategy over the other.
Masters and high-ranking players however, have dominance in both playing styles, and can manage both in the opening game stages, and then adjust on the fly as it suits them or when they figure out their opponent's playing style and what works best against it.
My preference is strategy 2; in a recent game, I put one of my knights into 'God Mode' there at the end. My opponent as well if you observe is probably a fan of strategy 1 (consistently avoids confrontation etc.)