Not at all! They're my favorite artist group. I can see that you've been inspired by them but you still succeed in integrating your own style. I myself would love to be able to achieve some aspects of their art.
PS: I saw your Ratchet vid., helped me a bit to get used to Photoshop (had to pause allot).
Yey~! Looking forward to this. ^^ I'm not much of a gamer, but Ratchet & Clank has had me hooked since the beginning. Although All 4 One kinda sucked so bad that I didn't buy that base defence one that came after it.