Hmm, I felt the opposite. Maybe because the FFVIIR bosses were a lot harder, I tried different things to see if I could make them easier. It is possible there was a single strategy that worked for all of them but I never figured it out! For FFVII, I get that there are a few themed bosses like on the elevator and the pincer attack but those were near the beginning. After that it felt like spamming attack, limit break, summon took care of most of them.