Variable carbs in labelling

I've just been looking at labelling on some of the 'raw' foods I've bought recently, and there seems to be a fair bit of variation in the carb/fibre figures. I just wondered if anybody could explain for me. Two main examples (all figures per 100g):

Almonds
Co-op: Carbs 9.1g (of which 4.4g sugars); Fibre 13g
Sainsburys: Carbs 13.3g (of which 5.3g sugars, 1.5g starch); Fibre 6.8g

Walnuts
Co-op: 7.0g (of which 2.6g sugars); Fibre 6.7g
Morrisons: Carbs 3.3g (of which 2.6g sugars); Fibre 3.5g

Other figures (Kcals, fat, protein etc) all look fairly similar.

Thank you all for all this.

Mr Pot: that's fascinating, as the picture on that link shows exactly the same packaging as the nuts which showed the Sainsbury's figures I listed - so Sainsbury's alone list 6.9g vs 13.3g of carbs on the very same product! (Again, other figures vary a bit, but nowhere near by almost double!). Certainly, the 6.9g is much closer to what I expected; seeing 13.3g is what started me asking questions. I might pursue that with Sainsbury's, as the variation seems suprisingly large.

Bulkbiker: no, they're not roasted, but standard 'raw', kernels.