Pochettino replaced the controversially dismissed Nigel Adkins in January and while he has won plaudits for the manner in which his side have played, his points-per-game ratio is similar to his predecessor.
Although loath to be engaged in a discussion about who he replaced at the Southampton helm, Pochettino was relieved to win the point that all but secures the Saints' top flight status.
Asked if he had justified his appointment, he said: "I'm not sure.
"I've been hearing the same question for four months now. It's not for me to answer that question.
"Yes, we are happy. The players have put in an amazing performance in the four months that I have been here.
"That's what I can do. I can't speak about previous to when I arrived."
Pochettino was also pleased with the impact his double substitution had on the game just when his team needed it most, after falling behind to Phil Bardsley's wonder strike.
James Ward-Prowse crossed for fellow substitute Jason Puncheon to dispatch at the second attempt and their manager admits he was happy with his role in what could prove to be a crucial goal.
He said: "When you make substitutions, you always want them to have an impact and today the two substitutions I made had an immediate impact.
"It was a centre from Ward-Prowse and Puncheon got the goal, so it was immediate."