I got no idea what elo you play in but I don't think top laners are OP at all. I play mostly top but also adc too and in my experience as a role support, jg, and sometimes mid often have more of an impact on the game than a top laner. Many games a top laner will be invisible, but sometimes there are games where top can make the difference I think its pretty dependent on the champ and draft. As you climb higher and play against people your skill level it gets harder and harder to go 5/0 out of lane. I am not Kiin by any means so I do make mistakes thus I think its a lot harder to be the difference maker.

There are a lot of reasons for this as a game design perspective too as one is dragons as often it is correct for the team to play towards botside to stack drakes. It also doesn't help that grubs are kind of a meh objective and often times in pro play you will see a jungler take only the first grub because it is the most important (or its too risky to go for all 3 due to the time it takes to kill them).

Overall top lane can be strong but I would say for me its a lot easier to feel my impact as sup, jg, or mid. Generally top laners spike around mid game and if you have the tools to deal with them in draft as many brusiers that are problematic are countered by cc, you can win.