Oh come on guys, you are missing the best accents to laugh at. When someone has an accent in their native language, which is the same as yours and you both learn another language, they will SILL have a different accent in the second language.
If that didn't make sense, I will use an example. The hospital I work at used to have a lovely Aussie nurse in our ER named Jane. We are in north Texas, so spanish is very useful. Jane spoke "North-Texas-acquired-Spanish with an Aussie/North Texas/Northeast Mexico accent" Wow.
I mean. Just...Wow.
And I'm fortunate that the Outback I go to has no waiters doing accents. It's hard to ruin a decent cut of steak.