How would this jacket compare to the Rab Infinity? Also does anyone know if this full zip model has the same fill WEIGHT (not fill power) as the Diez pull over?

Tech Specs:

Material:

Pertex, DWR coating 

Insulation:

900-fill down 

Hood:

no 

Fit:

alpine 

Center Back Length:

27.5 in 

Length:

hip 

Pockets:

2 front hand 

Weight:

16 oz 

Recommended Use:

layering, alpine fun, winter exploration 

Manufacturer Warranty:

lifetime