If booked via lh.com your ticket would include drink/snack & luggage. Via germanwings.com it won't, unless you book their smart fare. Now, in theory lh.com price matches the smart fare price - so no gain. But as can be seen, in the transition lh.com sometimes matches the cheapest germanwings.com rate, but incl. of mentioned services (current £70 deal is such a case, includes all). I do not suspect this irregularity to stay for long though.