yeah lucas tend to be opportunistic, if you fish with his up smash ur likely to get punished alot, but if you can get a sneeky one in as a ledge guard its deadly, it can also be an unexpected option after a grab release or after d-air,neutral air, especially if you expect them to spot dodge. but really lucases only moves with range are
Up smash -Large hitbox extending upwards by about 1.5 lucases!, also sideways a fair bit
fsmash- hits infront,inside and slightly behind, (beware of some of lucases moves which actually have backwards hit boxes like his jab, will actually suck u foward from behind.)
downsmash- big range accross the floor but only fowards, 3hitter
fair- reasonable fowards range for lucas, its actually possible to hit people with 2 hitboxes at once with this, if your really close in and especially against large charachters, it must have a very strange hitbox but the range isnt that great and generally its not a safe approach, i only use it if the opponent is kinda disorientated or off stage or doesnt tech on hitting the floor which is ********..
ftilt- lucases ftilt is actually very good, very fast and good range fowards and abit around him, its underused so dont expect it too much, though personally i use it as a walking approach to mix things up or as a option after a fast falled neutral air.
dair- last hit spikes, big downwards range is deadly if you come in at an angle easily punished from sides
pk fire- good range, good opener, good for annoying people, its not very fast though, unlike links arrow if u fast fall it will just cancel on land and say pk fire but no fire! most lucases use it as a spacing tool, or for recovery using magnet pulls. if you can read the magnet pull landing, its essentially a free upsmash, this takes practise, since depending on the speed of the magnet pull the distance will change.
lucas has very little offensive options diagonally up or backwards, which is a nice spot for gaw to do some well spaced fair or bair, dair will also work if you do it from close to ground and aim for the floor hitbox, which can be followed with a dash (assuming its not shielded)
all that being said, gaw isnt a charachter that ***** lucas though some of the cast really do, he definately has the advantage, (as lucas i dread dk,marf)