Meh, I don't think Silva's size/weight should be used against him. That his toolbox, just like Fedor's mental-crazy-WTF-is-going-on-in-there mind state is part of his. Does it matter? Sure... as does any ability or attribute in anyone's arsenal.
But on the topic, I think Alistair would be able to match this for the most part and his striking ability would far exceed what Silva displayed.