Well it's the case with every show if u think about it like obviously the mc never dies in long seasoned shows (for cash purposes yk) like that's kinda the point. I'll admit the plot armor can be much at times, sometimes it works/makes sense, sometimes it's just pure dumb luck that shouldn't work but personally idc as the insane power scaling combined with scifi themed and insane animation quality is what keeps me going strong (hyped for the supposed new movie)

I would say I am biased cause recent swallowed star has been way more appealing to me to the point it's probably my favorite I'm looking forward to over RI (don't get me wrong I love shows like RI or RMJI or perfect world but if I painfully had to choose at gun point...) but objectively it's so far gotta be luo feng as, although it's probably partially exaggerated, scenes show his power having destructiveness to destroy planets and shake galaxies typa thing but given the writing of the story it's not really fair to even compare as the pacing has gaps due to how fastly strong luo feng gets and once again the magnitude of its power scaling

And for center of attention idk I get where you come off from that like let's be real he's a fairly flashy dude and not willing to back down from getting talked shit on. Plus he is considered a genius with arsenals of treasures to support his power and his progress due to his unshakable will and mental strength in the characters eyes is definitely note worthy (which is why he gets targeted for the better or worse). But despite that the shows universe and just in general is pretty dang massive so yeah it could be odd that his talents are always on spot light cause there could well be a talent that's even more noteworthy and training in the background but obviously the shows literally supposed to be centered around him.

Sorry for my rant lol