Twitter's product is significantly less complex than Facebook's. A 1:1 comparison of engineering compensation proportions isn't very relevant. Additionally, it

Twitter's product is significantly less complex than Facebook's. A 1:1 comparison of engineering compensation proportions isn't very relevant. Additionally, it's not like 100% of their MAU problems can be solved from engineering -- there are significant gains to be made from Marketing, and they can certainly leverage their current engineering talent (which is substantial) to work on product feature tweaks which will generate more stickiness.