Experience = Knowledge?

Nearly every job offer contains something like that: salary based on experience. It means that the more years of experience you have the better professional you are. It sounds reasonably but of course from time to time it’s not true and you always should check out skills of a person who applies for a job. It sounds reasonably too but I’ve been involved in more then 10 recruitment processes and only during literally 2 of them employer wanted to check my knowledge. The rest of them wanted to know only how many years/months of experience I have. They didn’t ask any technical questions, nothing. It’s incomprehensible, isn’t it?