I only saw the first one but...
For projectiles, lol why not reflect them. the more u reflect his projectiles. the less likely he will use them openly. If u punish him enough with his own projectiles he will be more cautious and use less. Which allows u to dominated mid to long range fighting. Also in the beginning of the first match, u were giving him too much time for him to play around with all his weaponry. A good link will work his projectiles within his melee combos, so if u allow him to pull a bomb to often it may hurt you in the long run. If ur too far away or if hes really defensive and backs away alot. I would say shoot an arrow at him every so often to prevent him from pulling bombs, or throwing a boomerang that could punish u on the way back if u spot dodge it.
Links attacks are wide and hit huge areas. So it provides him with a good circle of protection around him. However they also are very laggy at the end, aside from up tilt. Space just outside of his range and when he attacks he will be open to a grab or w/e u want.
Few things u dont wanna do against link while playing pit. Is to follow him too closes after u launch him into the air, his dair is really floaty this time and is still a great killing move. Also its not really a good idea to be directly above him, bombs thrown up or up tilts and up smashes, will probably be whats waiting for you. With pits poor dair its just not gonna work out for you.
Yeah... thats my 2 cents against playing Link. I play as Link alot recently, so yeah. Hope some of that info helps.