There are two types of offers in HSBC.
- all offline/website (10% like that), all cards including platinum eligible for that.
- HSBC Cashback related offers (may be temporary) which provides 5% cashback every month on Amazon upto 250Rs (this offer works only Cashback, not for other cards).
- Platinum has air miles conversion option (same not available for Cashback), which is useful for travellers and good card if one spend above 4L when using that airmiles.
- and if any 10% offer running in amazon, then all cards eligile for that offer (in that time no extra 5% for cashback card).