If the argument is simple, "I feel like the powers are samey", well, I suppose that's perfectly true.
But, the counter to that is, "So what?" So they feel samey to you? Who cares?
That's not the question at hand. I couldn't give a rat's patoot about your feelings anymore than you should care about mine. The question is, are the powers, in fact, actually samey?
No, they aren't. That's a provable fact. There is a pretty wide variety among the powers, even powers in the same class at a given level. What is samey is how the powers were presented.
If all we're talking about is feelings, then, well, there's no conversation to be had at all. Some like it some don't. Whoopee. All "samey" means is "something I don't like but, it's not enough that I don't like it, so, I have to come up with some sort of justification for not liking it to prove that it's BAD."