Sure it does.
Alright lets look at someone who hasn't trained anything at all ever vs someone who has trained BJJ for several years.
Neither have striking experience, yet
The BJJer has trained takedowns
The BJJer has trained takedown defence
The BJJer has trained sweeps
The BJJer knows how to mount
The BJJer is used to humans being aggressive towards them
The BJJer knows how to break posture and clinch
The BJJer has a lot(notice not all) of their trained submissions available
The BJJer is in(hopefully at least) decent physical condition
Jiu Jitsu translates to the streets easy, not nearly as efficiently as mma or boxing would, but they are still more capable than average Joe. Yes you'll still get rocked if you pull guard on concrete and go for an inverted arm bar, but thats not the only route of attack for someone who does JJ. Even only training BJJ it wouldn't be hard to start throwing punches from mount then work to a sub or just beat his face in.
Alright lets look at someone who hasn't trained anything at all ever vs someone who has trained BJJ for several years.
Neither have striking experience, yet
The BJJer has trained takedowns
The BJJer has trained takedown defence
The BJJer has trained sweeps
The BJJer knows how to mount
The BJJer is used to humans being aggressive towards them
The BJJer knows how to break posture and clinch
The BJJer has a lot(notice not all) of their trained submissions available
The BJJer is in(hopefully at least) decent physical condition
Jiu Jitsu translates to the streets easy, not nearly as efficiently as mma or boxing would, but they are still more capable than average Joe. Yes you'll still get rocked if you pull guard on concrete and go for an inverted arm bar, but thats not the only route of attack for someone who does JJ. Even only training BJJ it wouldn't be hard to start throwing punches from mount then work to a sub or just beat his face in.