OKC Thunder Trade James Harden

The OKC Thunder have traded James Harden to the Houston Rockets For Kevin Martin, Jeremy Lamb & Draft Picks. James harden turned down a 55 million 4 year deal with OKC to sign a 5 year 80 million dollar deal with Houston. At first I thought that this was a bad move for James Harden and OKC but it turns out that it’s not. What are you thoughts?