Both parts speak about reducing Cost for Aircraft.
the first is more general, then less cost for aircraft, ok. then the second is about Ground and yet again reduce aircraft cost. is this a typo and should this be a reduction for ground vehicles.
otherwise it’s just stating the same fact twice.
Update: as i feared New BR’s, forced the old 9.0 now 9.3 to almost constantly face 10.3 tanks, thanks for that.