26 isn't that young in the scheme of things! If he started his type rating at say 18 years of age and was line flying by his 19th birthday then he would have 7 years experience. If his company maxed him out at 900 hours pa then he would have around 6,300hrs on type. Considering the starting point for most jobs is a minimum of only 500 hours on type then you can draw your own conclusions as to whether you consider him to be experienced or not.