For example even though a 1h skill of 100 does more damage then a skill of 50 (doesn't matter by how much), a person with no perks in that line wont be doing as well as the guy who's maxed out the 100% dmg boost and specific weapon stuff like crit damage or bleed damage on sword/axes. Or wont have any of the advanced special moves like anything under 20% hp has a chance to instantly die (think that's the decapitation thing with 2H).
So skill level still matters, but perks matter more. I think the stealth skill is a good example, folks will be able to sneak up from a distance in low light and get an x2 sneak crit with a bow easily enough with a max skill. But a guy who's spent perks in there can run silently, have a delayed timer before an enemy 'actually' spots you giving you time to back out to a better concealed location, and do x3 with that bow on sneak, or x15 with a dagger. As well as other stuff like perk that reduces chances your seen by %. So anyone can have a useful sneak-bow opener with sneak ambush. But someone who's spent the perks is going to be one hell of an assassin that outclasses the non-perk guy by a wide margin.
So yeah I love this system, lets you choose how much skill progression you want to do, what makes sense for 'your' character, while still making 'everyone' unique. And if you want to play a 'TRUE' Jack of all Trades it means you have to spread your perks out, and that means your going to be limiting your self on top-end stuff. I think its awesome, so I picked 'I like it' as I don't plan to max out all on 1 char, but like that the option exists.