Viagra vs. Cialis: The Ads

I saw Cialis ads quite a lot while I was watching Flames hockey last winter, as they were one of the sponsors. Their ads feature a middle-aged couple arriving late for some kind of social engagement because they were fucking.
The Viagra ads that I saw at the same time were a bit different. They featured middle-aged men only. No women. The men in the ads were doing manly stuff, like hiking, building a house with their bare hands, and driving slowly along a scenic highway.
The latest ad features a middle-aged man driving a truck and pulling a horse trailer. He gets stuck in the mud, and uses the horses to pull himself free so he can be home in time for dinner. Or sex. It's not clear as again, there's not a woman in sight.
Both of the Viagra ads are coloured blue. Everything you see in the ads is blue. I read when Viagra first came out that a side effect was to make you see everything through a blue filter. Are the makers of the ad trying to suggest that is a good thing?
Because I'd rather see things clearly and be fucking a woman than seeing everything as blue, doing manly things, and not fucking at all.