You can do a lot of damage with nades, but there's no way someone hit you 4.5k damage per grenade. Assuming it was shrapnel, you'd need over 3500 power, 300% crit damage, 25 vuln, and every damage multiplier engi can have to be active for that amount of damage [Did the calculation]. I know what you're trying to say, but hyperbolising doesn't help your point and only derails from an objective discussion on how to fix engi without gutting the profession.