Enemy weaknesses always scale well (from a player's perspective). If you're playing solo Trish, you better have the hammerless or the cane ready to go. In multiplayer, this is the guardian engaging and attacking. 4/2/4 means it's not going to be a guaranteed hit in the first scenario, but when you're packing big guns, this guy is a speed bump in a way that "spend two actions or something really bad happens" isn't. Trap him with Restrained. Seeya.