All of the reports I've read about Greenhouse Bubba is that it's sweet and bubba is more hashy coffee skunky weed, also their description says Kush x Bubble Gum which Bubba Kush is not.
The problem stems from there being no copyright laws in regards to strain names, no patents on the 'recipe' strains are made up of or any legal requirement that any strain name only be used with the same 'recipe' for any strain. That's why there are about 30 knockoff White Widows where some are mostly sativa and some are mostly indica and the flowering periods vary by as much as 20 days or more.
Any breeder can slap together any strains they have to work with and call the results anything they want and if they use a name of a famous strain they will fool some people into purchasing the strain from them even though it is genetically nothing at all like the original, so breeders like Green House Seeds can cross Bubble Gum and a Kush and also cross/combine the names of each and call it Bubba Kush.
There are no truth in advertising laws in regards to cannabis strains. It is strictly a case of caveat emptor, let the buyer beware.
If someone does not know things like what breeder created an original strain they are likely to end up with a knockoff because many will purchase by strain name and price but not by original breeder and actual genetics. If they do not know what an original strain was made from, what genetics went into it, they may not even end up with an actual knockoff that might at least be similar to the original and instead end up with something that is almost totally or is totally different than the strain name implies.
Growers have to educate themselves so they will be able to purchase what they actually want, and actually get it, or just accept that caveat emptor, let the buyer beware, applies to few, if any, things as much or more than it does cannabis strains and just settle for whatever they get.