each fund is different from the other in the portfolio they maintain. If the newer funds have performed better, it is merely due to the better market timing they achieved and a different set of stocks to put money in.
ld funds cant do too much regular churning. Also the logic of higer returns from fund just because u invested in IPO is not correct.
If Sundaram growth had had the same percentage returns as the new fund, ur absolute return would have been same. I do not think by quoting a handful of IPO's outperforming earlier funds at just one given instance, u can generalize it?
Do more thorough reseach, talking more funds, over time,say for last 10 years. If you get the same result then u can prove ur point, else its case of poor judgement