actually the CL still depend on your income and bank's assessment. And based on the website, Starwood hotel dining seems applicable to both m2c amex plat and gold.Here

Anyhow, there's also agoda discount, which is higher for Plat Cards.

Dining privileges for the Premium cardmembers*

    50% discount for two diners
    40% discount for three to ten diners
    30% discount for St Regis Langkawi and St Regis KL

*Note: American Express Platinum Credit & Charge, M2C Premier Reserve, Visa Infinite, Visa Infinite Manchester United, Ikhwan Visa Infinite, World Mastercard, American Express Gold Credit & Charge, American Express Green Charge, Maybank 2 Cards Amex Platinum, Singapore Airlines Krisflyer American Express Gold, Maybank Islamic Ikhwan American Express Gold, Maybank 2 American Express Gold, Maybank Islamic Ikhwan American Express Platinum Card-i cardmembers

platinum got additional travel insurance, and priority hotline to customer service
other than these two, they're the same

Got mine through RinggitPlus too. Since then, banks been calling me almost on a daily basis to offer tonnes of their loyalty programmes. I guess as people always say, there's no free lunch in this world. You want a halogen cooker, you have to pick up a lot of marketing calls.