Weekly guild task lvl 4 makes 0 sense

Why does level 4 guild task requires in that case almost 50% more than level 3 task rewarding only 1 more contribution point? It doesnt make any sense, its not even worth to do the level 4.
Is it a bug or is it intended to be like that?

As far as I know, you do the highest level first as you only get the bloodstone reward once, then it’s usually more efficient to repeat the low level one for contribution.

Well if you get more guild exp at completing T4 guild weekly…

then well you know