Haven't actually ever skied Loveland myself but I'm sure it's WAY better than ABasin!
Advantages of A-Basin (I guess I owe a few folks to writing propaganda copy for both sides).
A-Basin has arguably the longest season in the Rockies, and often by a lot.
The Basin has one of the youngest lift fleets in CO. Zuma, Beavers, and BMX are all basically less than 10 years old. Even Lenawee is a spring chicken by fixed grip standards.
Technical terrain, either above treelike or in the trees, is perhaps the best combined collection in the Front Range.
Highest snowfall totals in Summit County, and only Summit Country resort with continental divide weather pattern advantage.
A-Basin has an historical charm and legendary lore unmatched in Summit County.
A-Basin has a pass cheaper than Loveland, both midweek and unrestricted.
Only resort in Summit County that is not a colony or charter state of the Epic and Ikon evil empires.
Black Mountain Lodge is perhaps the best mid-mountain lodge I have ever used. Views are awesome, seating is pretty good, food quality is top notch, and bathrooms are entry level with no stairs!
The Basin is the only ski area in Summit County with easy access from Denver if Eisenhower Tunnel is closed.
The inclusion of a single day lift ticket with most lessons is a major steal on the value front.
The Molly to the Mountain program is THE best deal in CO for beginner skiers. Unlimited beginner lessons with rentals for $250. Only $100 to upgrade to a full pass, which is $50 below the early bird price even!
Childrens programs are a terrific value, and with only one base area its hard for families to get split up accidentally.
Variable aspect from one single summit is ideal for Spring skiing, allowing you to follow the sun with near zero traversing.
Highest elevation restaurant in the USA at the Refuge summit house.
Free parking, and the ideal Fall or Spring group cookout setup with the Beach.
Even on the busiest of Saturdays the upper lifts are never too crowded.