I don't think Rwanda is a good comparison, given that what Kagame started off with was one heck of a mess. Thus, for example, rather than simply talk about "poorer", I'd consider the actual changes in some measurements. For example, consider GNI Per Capita (PPP):
Rwanda: 1995-$490, 2014-$1630. The change is a factor of 3.3
Kenya: 1995-$1550, 2014-$2940. The change is a factor of 1.9
So there is a sense in which Rwanda, in the last 20 years, has done better economically.