@Ddog123 "You've got to admit that it's frustrating seeing this guy who was actually kicking ass at first, be reduced to some wuss."
So what if it's frustrating? How can you criticize the work for at least trying to be a bit realistic? Things turned out as they should have in the real life. You can't defeat someone at Lv.100 when you're only Lv.50, under a strict power level restriction system. There is a limit to being unreasonable, so it's advisable for you not to get ahead of yourself.
If you were a Great Business man in your previous life, does that mean you'll be a billionaire if you were reborn, within the period of a few months? Get real. You need enough time for accumulation, connections, preparations, etc. to get anywhere close to that.
You won't be richer than Bill Gates after a few weeks since your birth, no matter how hard you try, right? Do we really need to tell you something so basic?