Ike's up-tilt is quick and powerful, and thats a move that really hurts Lucario badly in terms of speed and power ratio. Ike's f-tilt is also a good spacing move. And of course Ike's jab is a problem when the move if fresh. Other moves that would be quick and powerful is his b-air and n-air has a strangely larger hitbox than it seems, especially when fastfalled. The only two moves that outrange Ike's attacks are Lucario's f-smash and AS. So dont think only about Ike's laggy moves, good Ike's dont abuse the powerful, laggy attacks. And its not like Lucario can run away from Ike that well, Lucario only has average movement speed, so Ike can definitly catch up to you pretty good.
Also, Lucario can gimp Ike, but Ike can gimp Lucario just as well with D-tilt, D-air, or aether.