After a long and annoying path full of enemies that are stronger than any boss in the game EXCEPT Sephiroth himself, I finally reached the One-Winged Angel.
His first form was frustrating, but I eventually figured out you have to attack his core as the second team (I assumed it would be as effective as attacking him with the first team), then that deactivates the defense of the left side of his core. Once I figured that out, his first form was history...
Then I reached his second form, Safer-Sephiroth, his one-winged angel form, which I had both anticipated and dreaded. The latter, for good reason. I began the fight by fully healing HP, but with his first attack he killed Cloud in one hit. I use a Phoenix Down to revive him, but then he kills Red XIII. And before I revive him, he kills Cloud again. Then he does Supernova, which is the fraction damage attack, and thus his weakest attack even though it looks like it should be a 1-hit kill. So I revive Cloud, and try to heal from here, but he kills Yuffie, and before I can revive her, he kills Cloud, after earlier turning him to a frog, and confusing Red XIII, who then kills himself.
I barely even got any non-Phoenix Down moves in. It was a slaughter. And I know no amount of level grinding can increase my chances of beating him. I was over Level 60 when I got to him and I know he's designed to be proportionate to what level you are.
You said he was easy, but he's impossible to beat without the God Mode. I wonder what cheat codes people used when they beat him on PS1? Well, I don't know but I'm sure my Switch remote needs charging after all that time, especially how long it took to get to Sephiroth and beat his first form. I'll make some chamomile tea to calm down from the frustration, and then I'll fight him again, this time with God Mode so this time he'll be on the receiving end of a one-sided slaughter.
Before I wanted to beat him coz he's my favorite villain (if that makes sense). Well, he's not anymore! He must have caused so many devoted players extreme frustration, and the extreme difficulty of the path to him - you can't even run from the enemies there without receiving a LOT of damage - probably put players off from trying to fight him again (at least I can turn off random battles now I know I CAN get to him without doing that), you can't even fight him with a refreshed mind and be prepared for him.
Now I want to kill him because of how much frustration he caused me and who knows how many other players here. I had really hoped I wouldn't need the God Mode button to beat him, but it looks like I will.
Right now my instincts about how unbelievably powerful Sephiroth is and how he's WAY out of my league seem to be right. If he fought Palpatine, Sauron, and Voldemort, one thrust and he'd have a Dark Lord shishkabob. If he fought Zanza... it wouldn't even come close, Sephiroth would rend him in two like a hot knife through butter. Frieza? He's tear his tail off, shove it down his throat, and turn him inside-out.
How do people even get to Sephiroth at Level 40-50? Unless all the enemies, Jenova-SYNTHESIS, and Bizzaro-Sephiroth are set to Cloud's level as well.
Is there something I'm missing here?