yes and no
What he means is that yes it is included but in a modified way.
Due to limits in the game as to the amount of separate slots that it can handle, a great effort has been made to use slots more efficiently:
several 109 slots that were separate are now merged, which means you don't see them in the air.ini BUT you select them in the loadout list of the closer variant.
For instance, all tropicalized variants are no longer separate aircraft, rather, the "normal" variant gets transformed into a tropicalized one automatically when it is selected over a desert map.
In similar way, the recon variants are no longer separate but a selection loadout of the corresponding "standard" version.
A few variants are dropped though, given their non-representativeness (some ata, and K14)
It is also very worth noting that some features, like historical cockpit for Bf109 early (B-C-D, E1-E3) are only included in DBW, not in the present standalone pack.