To be honest, i thought at first that he was a good LPer. Then I eventually got into some others like Jacksepticeye (congrats on 1.5 million subs!), Yamimash, and RaedWulf and didn't really see him the same after that. At some points of his vids, it seems to me that he's grasping at straws trying to be funny (AW YESH, WIGGLE THAT BUTT... really?).
Markiplier I can stand since he tries to go out of his fanbase's usual comfort zone (still getting annoyed about the butthurt fans), Yamimash doesn't overreact TOO much from what I've seen, and Jack tries to legitimately connect with his audience.
Getting off topic here... Pewds has gotten WAY too big (almost 31.5 million subs, I believe) for my liking. He tries too hard to please everyone and sometimes fails miserably. Sure, he gets tons of views, but his "Bro Army" is starting to look more like Xbox Live and the video quality is starting to decline. All in all, he's The Simpsons of Let's Players in my eyes.