I like that point too TPM, about Ahsoka calling Anakin on his wrecklessness... He lost sight of the bigger picture, and it was costing lives.
About Obi-Wan's behavior, I dunno... The implication by the commercial, I thought, was that Anakin was upset by the loss of R2 (his fist clenching, etc.), and Obi-Wan's response is "such is life, they're a dime a dozen" type of reaction. Does Obi-Wan treat droids like "tools" and not something you care about? Yes, but I believe this to be the prickishness...
Clearly Anakin and Luke don't look at R2 as anything less than a best friend to them...
The SW galaxy has that odd stigma about droids for some reason. Some people seem to openly hate them, there's some "bigotry" towards them what with the Cantina droid sensors and stuff. I don't know why they're disliked by many but Anakin/Luke seem to enjoy them and treat them as equals and good friends/companions.
To me it's like the difference in people who treat pets like members of their family, and then people who treat pets as "just animals". I come from a family where pets are treated like children in the family, but I know people who wouldn't hesitate to put an animal down at the first sign of illness, and they wouldn't put the $$$ into vet bills to help them.
I guess what I'm saying is that Anakin's hurt by losing (or thinking he lost) R2 in battle, while Obi-Wan unfeelingly tells him to basically "get over it", more or less.
It's the same disconnect Obi-Wan can have with the Clones.