Originally Posted by theaveng
Probably not. The Honda oil is a conventional/synthetic blend, and used oil analysis shows it is not a very good lubricant (breaks down in about 5000 miles). The Toyota oil is very similar to Mobil 1 (though not identical).
I can't speak to the similarities of Honda Green 0w20 and Toyota 0w20. But, there are multiple Honda 0w20 oils:
The even lighter, phantom Honda Green Oil
Honda introduces an Ultra Green Motor Oil - CleanMPG Forums
Of course, I'm wondering if the Ultra Green Honda oil isn't actually the 0w16 that will be actually coming out this year.