Traffic estimator says the keyword (in exact match and in US) will get up to max 1.34 clicks a day, even if I set max cpc at $200 just to test. However Google keyword tool says it gets 22,200 monthly in US.

There are no ads currently for this keyword could that be the reason why traffic estimator is very inaccurate?
If keyword gets 22,200 monthly visitors why just 1.34 a day I should expect?