I have to wonder ...

if Peter's got the power to obtain other people's abilities by mere presence, and the Haitian has the power to suppress other people's abilities, does that mean Peter can now also, if he figures out how to, suppress other people's abilities by virtue of having been in close quarters with the Haitian? Or did the Haitian's suppression powers take precedence and keep Peter from absorbing them?

In other words, which one of them is more absurdly overpowered: the guy who absorbs everything or the guy who can dampen everything?