I am just playing tool. I cann't believe it, Google Yahoo couldn't reach to 9X% Is it accurately? Below is snapshot. Forum only allow me post 4 images, refer to below link if you would like to see more images. Keywords Difficulty Check images
eh .. not really that effective way to check the difficulty you be better off checking your competitions via allintitle in google. check the top 10 of each keywords, it will give you a better gauge.
I just wonder if it's only checking number of competing results, or whether it references the allinanchor: and allintitle: operators...