This is something I think about. We have know sometimes the froggy balances things for pubs. There have been plenty examples of this, like PL back in the day or Spirit Breaker, or the slow on Dust. So that begs the question: Where does the difference come between "That's actually OP for pub games" as opposed to "Pubs just don't understand how to deal with that."?
It's certainly an interesting thing to think about, and then you wonder why some of these things aren't run in pro games (as far as CM heroes go at least). For instance, low-level pubs often have trouble with Riki or other invis heroes, and there's a simple way to deal with them, but then now you see something like Ursa and I've seen plenty of people claim he's just a "pub hero" that people are afraid in the current patch, but seem to completely throw out the fact that he can solo Rosh at level 6 in less than ten seconds. To deal with anyone that solo'd Rosh before, you would usually scout them doing it and interrupt them, as they were usually in a vulnerable state trying to solo it. With Ursa now, you don't have time to react to catch him out, even if you do get lucky and catch him in there, he can probably finish it right in front of you with no fucks given, and his team gets free Roshes all game. To me this does sound pretty overpowered and unfair.
Glimmer Cape is a glimmering (pun intended) example of this too. I think this thing is still overpowered, even with the manacost nerf, but lots of people will say it's just a "pub fear".