Traps a lot weaker in Nightmare mode?!

[Bogdanov89]

When i summon a Gas Trap in my Tavern it has like 50 charges and lasts about 37 seconds.

When i summon a Gas Trap on a Nightmare map, it has like 35 charges and lasts like 29 seconds.

Are traps meant to be weaker in Nightmare, or is this a bug?!

If this is intended, it makes Proxy/Inferno/Ethereal traps pretty much useless in Nightmare - especially since they were already quite weak...

[Xavia]

It the same goes for auras, mine has 2200 health yet in nm it has 800 and smaller radius. It pretty crap tbh, they buff squire and apprentice strongest tower classes, yet they nurf huntress and monk to oblivion which is total BS

[Bogdanov89]

Although Monk's auras are very powerful, neither Traps nor Auras should be nerfed so that half of them becomes borderline useless in Nightmare...