Comparing a slot receiver to Diggs is not logical, hence my (yes) condescending remark. Again, this is not an either or argument nor should it be.
But since you brought up stats, let's do that. Among SLOT receivers, Beasley is:
No. 3 in receptions.
No. 5 in reception yards.
Not bad.
He is reliable still, has a knack of finding the soft spot in the zone and plays tough.