M2U pay is not really a payment gateway. It is a shortcut / widget button for online shop to put at their website. Compare to manual online transfer, the benefits are :
1) Buyer doesn't have to enter the shop Bank Account No. Eliminating paying to wrong account.
2) Online Shop is verified by M2U, but M2U already stated they will not be responsible for any fraud case.
3) Seller will get notification automatically from M2U about the payment. Buyer will have to enter the seller's email for manual online transfer.

Why it is not consider a payment gateway
1) Buyer still have to enter the correct payment amount. Payment gateway will automatically display the amount to pay.
2) Buyer still have to enter the order number / description / invoice number. Payment gateway will automatically display the invoice / order no.
3) No integration to online store system, buyer's invoice will not marked paid automatically after the payment. It will still depended on seller manual authorization. Payment gateway is integrated to the online store system, automatically accept the payment and changed the invoice status. Seller doesn't need to verified the payment, as it is already done by the payment gateway.
Maybank has it own payment gateway solution (merchant solution), which is only feasible for large corporation, such as GSC, when you make online payment with M2U at GSC, that's the direct Maybank payment gateway.
This post has been edited by 1biz.my: Jul 23 2013, 04:12 PM