Bewear's character is such a perfect combination of huggable and sweet jesus get away from me.

252+ Atk Guts Ursaring Close Combat vs. 252 HP / 252+ Def Bewear: 180-212 (40.5 – 47.7%) -- guaranteed 3HKO

The strongest Ursaring variant there is, adamant guts, cannot 2HKO a fully defensive Bewear with a base 120 SE move.

On the other hand, the same fully defensive Bewear with no more Atk investment than 31 IVs can do this:
0 Atk Bewear Superpower vs. 252 HP / 4 Def Ursaring: 396-468 (103.1 – 121.8%) -- guaranteed OHKO

Bewear is also 10 points faster (156>146) than ursaring if both are uninvested in speed.

TL;DR – Ursaring definitely cannot talk shit about Bewear, but it's fun to see it try.