Anders123, do you mean:
How much difference are there between these kinds of wood as an outer ply? Or something else?
I think I am going to answer the question I think you are asking. A different outer ply would make a huge difference. A different thickness to the outer ply would also make a huge difference. And the wood that is directly under the outer ply impacts how the outer ply feels as well. Lets see if I can demonstrate a way of understanding this.
Let's use three Stiga blades for the first example: An Offensive Classic feels hugely different than and Ebenholz V NCT or a Rosewood V NCT, but, aside from the top ply of the blade, the three blades have the exact same wood. Under the top ply on all three blades is: Spruce--Ayous--Spruce. With an Ebony outer ply the blade is faster than the other two. With a Rosewood outer ply it is not quite as fast as with Ebony. And the Offensive Classic has used Limba, Black Walnut and Koto as the outer ply in different incarnations. The Offensive Classic, with any of those three top plies (Koto, Limba or Black Walnut), is significantly slower than Ebenholz and Rosewood and has less touch and power than the those blades.
Here is another example. The Primorac Off- blade from Butterfly has these plies: Limba--Limba--Ayous--Limba--Limba. The plies of Limba are thicker on the Primorac Off- than on the Stiga blades, and directly under the first ply there is another ply of Limba. All these blades from Stiga have these plys: Limba--Ayous--Ayous--Ayous--Limba, and the outer ply of Limba is very thin: Allround Classic, Allround Evolution, Tube Allround, Energy Wood, Tube Offensive. The Clipper has two more plies of Ayous inside, but otherwise the blade is the same construction. It is like a 7 ply version of any of the blades I mentioned. When you play any of those Stiga blades, the wood feels very similar on all of them. Some are slower, some are faster. Although this is so, they all still feel very similar, almost like they are slower and faster versions of the same blade. Why am I saying all this. They have almost the same exact wood as the Primorac Off- and, while they all feel similar to each other, none of them feels anything like the Primorac Off-.
So the kind of wood used on the outer ply has a lot to do with how the blade is going to play and feel. And what is under the outer ply has a big impact on how the blade feels as well.