The TOEIC test has a broad grading range but is actually graded at A1 level
IELTS is basically more demanding, and requires contentration over a longer duration. The test is graded at the minimum level of B1.
Some people may find IELTS intimidating and may not perform as well as they could.

Just my 2 centavos
WHY WOULD ANYONE TAKE A HARDER TEST THAN THEY NEED TO?
which test is the eaiest to pass and is approved by the UKBA?
is the TOEIC run by ipd in Cebu ?