Wow, not even close. It's cheaper.
Why would you compare a $100 CPU to a $200 one? If you meant an old i5, however, that's a different matter entirely.
You have to give us more specs than that, though. We can't give you a real answer unless you give us real chips - the exact ones you mean. There are about a dozen models of Phenom II, and three or for Intel Core i5's for each of the three generations.