A twin-pulse Akash-NG that is actually longer/wider than MRSAM would in no way or conceivable form have lesser range. In fact, range and speed should be even better.Never heard of a single pulse Akash NG but then again I'm not following the program closely.
That dual pulse with the booster would probably be the only version & the reason they're not hyping the range & altitude could be cause they don't want to offend the Israelis for all you know .
The Baraks aren't exactly the most economical MR SAMs out there . If & when we buy them we're obliged to get some of those parts from Israel as per our agreement with them apart from a certain minimum qty both sides would've committed to .
I reckon we've ordered our quota of what we've committed . Just as Israel has gone it's own way we have too . Akash NG may well be our answer to MR-SAM / Barak -8 & it's subsequent iterations . Just my 2 cents .
If DRDO's claim of 30 kms is correct then no way it has twin-pulse. But if it has twin-pulse then your assessment looks perfectly viable.