they are type of commandos. One is airdrop from griller and onther jump out of building. First one doesnt have suprise element and both of them are expensive (390 mp]. second one nerfed from 4 to 5 and gamon bomb need to cooldown.
Cost of commandos is:
350 to build
320 to spawn (+70 = 390 total cost)
390 to drop + building/reinforcement point
Light gammon bomd are not on CD if one uses glider it is needed for "infiltration" commandos but that is common to all units of the type.
Not to mention their stealth power nerfed last patch. And again, you can do ambush bundle nade with Strormtrooper without upgrade MP40 just like them. They are working as intended. Stop Crying weabraboos.
Stormtroppers do not have access to a bundle grenade they have incendiary instead that does start in CD.
I am not sure what nerf to "stealth power" "or from 4 to 5" you referring to (or if they even exist).