For me,ristie was doing the right thing on the first two rounds,he keep waiting and try rest for the final rounds,especially 4 and 5.
But he took hard shots and cant recover on these rounds,RVR land a atmomic right hook on the final of the third round,when he landed it,i saw Ristie hurted by it.
RVR just keep pressing him,and not allowing ristie control him and put him on the ropes,local when ristie can do his trap knees,hooks and uppercuts.
Genial performance by RVR
My opinion is close to yours.
Ristie wanted to avoid a repeat of the fight against Kiria. He landed a lot of strikes in the first 3 rounds, but most of them were not clear.
On the otherside, every punch of RvR was on target and caused damage to Ristie. If you watch again the first 2 rounds, you will see that Roosmalen was better because Ristie couldn't block any hook. The stats proved it. RvR had 64/119 and Ristie 56/170.
Ristie wasn't competitive. He just had high level of resistance and he was lucky because the two knockdowns were at the end of the 4th round, otherwise the KO was certain. His disappointing performance proved that he is an unpredictable but not reliable fighter. He is able to defeat Petrosyan and he is "able" to lose from Kido (exaggeration but you understand the meaning).
The unorthodox style of Ristie (No defence, weak strikes, guard changes) can give a special victory but can't save you for a long time. If you don't "study" your opponent, you can't win. Ristie wasn't prepared for this fight, even though we all know that Van Roosmalen can't change a lot of things in his fighting style. He is predictable.
Kiria was much better αgainst Van Roosmalen and he deserves better treatment, although we' seen this fight 3 times.
Now everybody is expecting RvR vs Petrosyan in a 5 round fight.
(Sorry if my english is not very good)