trundle ult a bit too strong?

literally 1400 dmg on me while attacking nexus + stealing resists?thats more than half hp of damage rengar with mr /lvl glyphs

i tried to burst him down before he took down nexus ,but nope ,tank me wins ,if he did 1400 dmg than means he healed 1400 only from that ult while taking me even further with resists

just saying if thats on damage rengar

what if u ult a 4k hp tank? steal 1.500 -2k hp and 200 armor /mr?maybe exaggerated but too strong

smashes anything in 1v1 also ,while weaking a tank extremly for your team to kill him

his ult is like botrk + expose weakness + cleaver but all stolen