"We were the best at the beginning of the season, we were not so lucky in the middle of the season and I saw the stewards a bit too much," Valsecchi admitted. "At one stage we wondered if we would be able to fight back at the top again.
"But when it was important in the end we came back, driving really well, having a good car," he continued. "In Budapest we took back the situation and were one of the quickest and I had a great weekend - although unfortunately, so did Razia!
"I just thought, 'Keep working like this and we'll make the gap,' and in Monza we did it," he added.
As far as the 25-year-old Italian is concerned, it's the level of competition in the series that makes the title worth the effort in the first place.
"No one can become a hero if he doesn't have a great contender," Valsecchi told the GP2 Media Service
after clinching the title. "In GP2, there are the best drivers in the world outside of F1, and the level is so high that if everything is not perfect, you cannot win: there are teams like Lotus, DAMS, iSport, Racing Engineering, Addax, Arden. Every one has won in the past."
That extended to his own nemesis for this year's title, Luiz Razia: "I'm really happy to have a great contender in Razia, because to be honest he made our job really difficult!" agreed Valsecchi.
On the losing side, Luiz Razia was honest about his feelings after his final hopes of snatching the 2012 title from Valsecchi slipped away in the Singapore feature race.
"I obviously feel a tang of disappointment that the title battle is over, but I can't complain about my results across the season as a whole," said Razia. "I think I have improved hugely as a driver this season and I have grown within this team.
"Luck hasn't always been on our side, but we've fought back strongly in times of adversity and there isn't a great deal to choose between my results and Davide's," he added. "There has been a lot of hard work and nothing has been gifted to us, so we have to be satisfied: I think the team and I have shown we can compete at the very highest level - and succeed."
Looking to the future, Davide Valsecchi was cautious when asked if winning the title meant it was possible that he would be following his predecessor as champion into F1 in 2013 - but also optimistic.
"I really hope I will have a chance, and that I can show that I deserve to be there, that I'm ready and I'm strong enough to be there," he said, lamenting the absence of an Italian on this year's F1 Grand Prix starting grid.