Yes, xthetenth.
I thought i mentioned a diffrence in getting xp. If i nuked all the creeps in may way it feels atleast as if i would get more xp. Maybe im wrong. But i know, that you get xp with just standing around + its shared with other Demigods at the same place.
And creeps get ~20 gold per kill. Tried to guess it correctly after each kill i made, but its not that exact due to the additional income from the mines etc. And since these creeps come in waves of ~8-12 creature (with archers) its quite effective to get the last hits on creeps. You just do it diffrent than in Dota. Here, just nuke the s*** out of the waves with a random AE-Skill, not just get the last hit with a single strike 
Fits the theme more, you're a demigod, so hell, hit them like you mean it!
I gonna play a game right now to check how much gold each creep gives. The 20gold mentioned above is refered to the normal melee creeps. Catapults + Iron Golems will give more i think. A tower is worth a around 100, but im not 100% sure.