He's very good. Super talented, anf likely the best in the division right now.That being said, he beat a guy who was on the wrong side of 40 and had just been schooled by an overweight dude with cinderblocks for feet. Not to mention his history of having a soft chin and poor punch resistance. Yes he won, but it's not like he wiped the floor with Wlad. He went tooth and nail.
There's a wee bit of revisionist history about Wlad now, mostly by Joshua fans, since Joshua beat him. I just feel like the rating of Joshua has been inflated because the quality of his performance, and opponent, have been conflated with the quality of the fight (which was great). But Joshua isn't great. Not even close. Yet.
My only worry about him, which others have stated, is his bulk. But that shouldn't be a problem until he has to dig deep stamina wise. (The Wlad fight was tough, but Wlad doesn't exactly set a fast pace. I'd worry if someone really went after him for 12 rounds. But idk if that guy is out here right now.)