I totally agree. I think the Giro has its place as the true climbers tour. Just a bunch of really brutal climbs which make it worthwhile. Flat stages can be relatively piano but the giro's mountains are untouchable for what they provide in entertainment. The tour is just the tour. Its got some brutal mountains but what makes it the best race is that it is the most focused on, has the best riders on their best form, and is absolutely balls to the wall racing every time the wheels are on the pavement (although I believe there were a few more relaxed stages this year than in the past due to uncertainty).
The vuelta just sucks. The scenery is lame, the climbs are there, but the preceding stage was so boring that it generally is just a 150 strong peloton firing up the final climb and a very short race of attrition on a single climb