For the mathematically minded amongst you

[marypcbuk]

Savings rates; I'm sure they're designed to confuse me. Which of these actually pays better interest (both ISAs, so no tax to complicate things)?
6.25% on an investment of £3,600, paid annually
7% on an investment of £300 a month, totalling to £3,600, paid annually - and labelled as 7% AER...