Yes, OPR will have an effect on the Base Rate as Banks do typically place and borrow from these Overnight Deposits

But Base Rate is suppose to enhance Transparency

Based on BLR, the Effective Rate ranges friom 4.45% (BLR less 2.40%) to 4.65 (%)

Now based on Base Rate, for Maybank this would mean BR of 3.20% + 1.25% to 1.45%

For RHB with Base Rate of 4.0%, this will mean BR of 4.0% + spread of between 0.45% to 0.65% only

Naturally some ppl might want to go with RHB cos it is seen to be less greedy and a fall in future BR will mean lower rates.

In this Case, 2 is better cos the potential upside is higher

When the Bank become more efficient, can have better rate cos @ 4% to 3.2%, the Bank can still try to improve

But plus 1.2% shows the Larger Bank's GREED