Don’t treat Lord Vishnu avatars like Marvel cinematic universe characters. All Vishnu avatars are powerful in their own way, including Vaman Avatar.
A dwarf measures the whole universe in two steps, isn’t it powerful?
Rama leaves luxurious life and goes to forest for 14 years, if this is not powerful then what it is?
Krishna influenced the outcome of Mahabharata war without lifting a weapon, is it not the power at its peak?
Each avatar of Bagwaan Vishnu, including Narashima avatar, was powerful.