That was my point, that he's about the same as Heath, but no one pings him for it. I think both of them are about the same, but Dex is shorter and has a better chest, so he doesn't look as "bad" as Phil.
PH's narrowness isn't that big a disadvantage as far as I'm concerned - he actually looks better in the mandatories than just about everyone else.
Dex is 5'6 (listed as 5'7), so I would guess he's narrower than Phil, or matches him.
Flex was narrow, which is one of reasons why his latspread wasn't wide, just like Phil's.
Flex was an illusion due to his tiny waist.