It was solid and organised, I think that in itself became the problem when he came up against footballing sides because he knew no other approach, you just end up a rabbit in headlights when it starts to go bad.
This is why Martinez's first season was the best we've seen in about 30 years. For that one season he had the legacy organization of a Moyes defence combined with Roberto's more attacking philosophy.
A season later the organization wore off and we've never been the same since, I think it reflects in the atmosphere at Goodison too. In Moyes era going 1-0 up we could almost start to celebrate at that stage because we always have a decent chance of a clean sheet, stark contrast to now where we need to be about 3-0 up, even against the likes of Fulham.