Who's saying Liners are underpowered? in what universe? Liners are the hardest thing to pirate by far, they're usually very hard to stop before they make it to a station without multiple pirates, 700/700 b/b and light cruiser armour (after a nerf) makes them a single gunboats nightmare, lone bombers have issues too.
Compare them to Ctrans (the most comparable transport) and they make the ctrans look weak, 200 less botts, 30k less armour and in the Bret ctrans case just as big and twice as easy to hit.
And the real kicker? 100 more cargo, the Lux liner's 4300 cargo makes it a real cracker of a trade ship (unless the infocards are out of date). it costs twice as much, but so does the Atrain and doesnt really count as balance.
