1 lbs = 16 oz for those who dont know...
PRO MODEL HEADTUBE WEIGHT = ABOUT 8 OZ (half of a pound)
lucky 4" is 2 lbs 14 oz. THEN YOU ADD THE PRO MODEL HEADTUBE WEIGHT.
lucky 4.5" is 3 lbs 3 oz. THEN YOU ADD THE PRO MODEL HEADTUBE WEIGHT.
lucky 4" WITH HEADTUBE is about 3 lbs 6 oz, so almost 3.5 lbs.
lucky 4.5" WITH HEADTUBE is about 3 lbs 11 oz, so the same as a TSI 4.5"
phoenix deck 4.5" (all one piece) is 3 lbs. it is much lighter, so u are wrong about that.
phoenix deck 4" is about 2 lbs 14-15 oz, so actually the same weight as a pro or 1 oz lighter!
phoenix's are better IMO and in most people's opinions THAT HAVE RIDDEN ONE.
and to the post below you, you wont break a headtube, i dont think. i used to think that, but pro headtubes are extremely strong, you would be more likely to break the deck. phoenix will last you longer and is lighter.
btw, this is all IMO, EXCEPT FOR THE WEIGHT SECTION OF MY POST.
hope this helps,
Tanner!