is WILL be 28 mp per model, which is less than grens. Did you read the patchnotes?
The point is that the british are paying the price for a 5 men infantry section in the beginning, even though the infantry sections are only 4 men by default. It is only when they british buy the squad size upgrade that the tommies squad are truly worth 280mp.
By comparison the wehr who pay the straight 240 mp for a 4 men grenadier squad.