i.e Fulton - 10 tests in 2013, more than Sinclair ever had in a single year. More than Franklin had as a batsman, more than Martin got as a bowler, more than Flynn got as an opener, After his first two years, Sinclair never played more than five tests in a year.
There are obviously "We like this guy, we'll try make it work" patterns in NZ Cricket. Styris himself pointed out he thought it bull**** that Bruce Martin wasn't A: Played earlier and B: Kept in the side.
And this leeway was given because it's a position that has no competition. Sinclair throughout his career competed against Fleming, McMillan, Astle, Taylor, Ryder and McCullum for a batting spot. Franklin and Flynn with Williamson, Taylor, Ryder.
They were not good enough to keep out the incumbents or to keep out the guys on the sideline asking questions.
The fact is, Fulton averaging high 20s was good enough to keep out the next guy because of the lack of competition we have in openers domestically particularly when his opening partner was performing to that same very poor standard.
With Latham now making a more permanent shout for the opening spot, we may actually see the opener merry go round start speeding up again to find him a partner that is good enough to stick around.
Regarding BMartin, Vettori and Patel kept him out when he was a younger man. And when he did finally get his chance he didn't impress over 5 Tests. While Sodhi has done no better, his batting, age and not being a finger spinner has kept him in the side longer than a series or two.
If Sodhi continues to average 50+ he won't make it through 2015, but as of right now the only player likely to come into the side and bring better results is Jeetan Patel. A player approaching the tail end of his career who would rather close out his days playing County Cricket than getting back on the merry go round.