Intel Socket 1150 - Z97 weight limit for the CPU cooler

[Kiriakos-GR]

At my recent research about Z97 boards, I found that gigabyte at their FAQ it mentions max cooler weight limit at 450g.
I have Prolimatech Armageddon 750g over P45 board in the past decade.

Are Z97 boards thinner than P45 boards?