Even to a dilettante like myself, most DJs - like most other artists - have their little idiosyncrasies. Guetta's distinctive traits, however, are tough to pin down.
It might be that sounding mainstream and bland is actually what characterizes his music. That is certainly how this brand new album sounds, and that's despite the fact that it is more personal that what he has done before..!
It is, however, quite adequate music to run to and also, I suspect, to dance to.
Plus, kudos to Guetta for his enthusiasm! No falsely detached, cool-dude attitude here!