Last year with PP and KG, i would've easily done this trade. The team needed offense and even with Rondo, the team was known for going through scoring droughts. Especially with the decline of PP, we needed someone else who could create their own shot.
this year or moving forward, I would think that OKC would love to do this trade because i think Rondo's playstyle is a better fit for them.
However, as for the C's, i'm not so sure. I might do it simply because i think Westbrook is a more complete player - or rather, a player that's easier to build around. But truth be told, if the roster stands pat, i think neither Rondo nor Westbrook will really move the needle for us. There are just so many holes in the roster.