I would take the values and copy them to the corresponding effect.
Like for instance if this preset has 0.30 vibrance and its rgb values are 0.98, 1.00 , 0.95 I would just copy all those values are replace the default ones.
You can probably copy and paste some stuff.
Like for instance if you took:
#define TechniAmount 0.40 //[0.00 to 1.00] and copy and pasted like:
#define TechniAmount 0.80 //[0.00 to 1.00] that should theoretically work, but I haven't personally tried it.
Also I want to clarify that ReShade is going to read it like:
#define TechniAmount 0.40
Everything after(and including I think.) // is just a comment.
So if that part is indentical in Sweetfx 1.5 and ReShade sweetfx 2.0 then you should be good.
So if you were to copy and paste a 1.5 preset to a 2.0 preset. You would be leaving out a lot of values and ReShade would throw errors. For Instance SMAA prediction would be completely left out.
And I don't think anyone has asked this. Hope this helps you out.