You're not comparing apples to apples though. The Chiefs went into this years draft with the following picks in the first 3 rounds:
Round 1, Pick 29
Round 1, Pick 30
Round 2, Pick 50
Round 2, Pick 62
Round 3, Pick 94
Round 3, Pick 103
They had double the Bills picks. Double the picks is not "a similar set up". Of course they are going to come away with more players. But the loss of Tyreek Hill should not be overlooked.