Sure looks like they look alike, just the heads are different.
eh.. their heads are what the SAME about them lol look closer:

forchest:
Leck-strong and deep
Tuck-smaller and flat

Legs:
Leck-short and thicker boned
Tuck-long and light boned

Tail:
Leck-long, starts to curl back up at the hocks
Tuck-short, ends completly at the hocks

topline:
Leck-strong but not perfectly level
Tuck-strong and perfectly straight and level

the family resemplence is there, but Leck takes after her dad who is also shorter, thicker boned,and deeper chested. Tuck takes after his mom who also has a flatter forchest, less bone and leggier. Tuck has his dads tail and topline. Leck has her moms head, topline and tail.