Falco can force approaches, control space, and frame trap all with just lasers. He has a 2 frame jab with range comparable to our own, great evasive options, can juggle well, racks damage fast with his chain grab, and a very important but I think under appreciated quality in that he doesn't have to over commit with his bread and butter moves.
Marth has the capability to play both great offense and defense, great spacing and zoning, possibly the best out of shield options in the game (2nd to mk at worst), amazing juggle and ledge traps, kills well with fresh aerials, a dragon punch, fast walk speed to compliment his shield, safe options on shield when tipped, edgeguards well, and a great pivot grab.
Obviously I only mentioned their good atributes, and at glance marth might seem better, but falco's laser opens doors for him that marth can't, and is the one thing I think makes him better than marth.
Marth has the capability to play both great offense and defense, great spacing and zoning, possibly the best out of shield options in the game (2nd to mk at worst), amazing juggle and ledge traps, kills well with fresh aerials, a dragon punch, fast walk speed to compliment his shield, safe options on shield when tipped, edgeguards well, and a great pivot grab.
Obviously I only mentioned their good atributes, and at glance marth might seem better, but falco's laser opens doors for him that marth can't, and is the one thing I think makes him better than marth.