Well, the Mr. T figures have articulation and LJNs don't. So Mr. T will always look weird, next to LJNs.
The real Mr. T stands at 5'10", not exactly a big man.
LJN figures roughly are 8" or the Bendies 4.5".
The existing Mr. T figures:
- 1983: Clubber Lang by Phoenix Toys (5.5")
- 1983: B.A. Baracus by Galoob (6")
- 1983: Mr. T by Galoob (12")
- 1983: Talking Mr. T by Galoob (12")
- 1984: B.A. Baracus by Galoob (3 3/4")
- 1985: Wrestling Mr. T by Galoob (1983 B.A repaint with robe, 6")
- 2001: Mr. T by Funko (6.5" Wacky Wobbler bobble head)
- 2001: Clubber Lang by Funko (6.5" Wacky Wobbler bobble head)
- 2003: Mr. T 3-D Animator action puppet by Fun4all (around 4")
- 2003: Mr. T by Art Asylum (3" MiniMate Celebrity Deathmatch videogame exclusive)
- 2007: Clubber Lang by JAKKS (around 7", street clothes or ring gear)
- 2010: Mr. T by Oddco (3" Weenicon)
- 2016: B.A. by Funko (3 3/4" Pop!)
- 2016: Clubber Lang by NECA (7")
- 2016: B.A. by Lego (1.5" Lego Dimensions figure)
There are also some bootleg rubber figures ranging between 4" and 6".
You could put one of the 7" figures next to an LJN, but it'll look odd.