THey actually will build power slower, according to the table. using a ally throttle table will make the truck very jumpy while trying to drive slowly at low rpms! but you can run an ecm from an ally truck it will just throw lots of codes

!! THe zf files are excatly the same as the ally files except for the throttl table, you could acheive the same power levels just by changing this table alone. ZF files also seem to limit abunch over 3250rpms where the ally files dont so even tuners u get to raise the rev limiter might let you rev highr but there is actually no power being made over 3250rpms, its just reving at that point!
Do you run efi live?