It is neither a Greater Than Sudoku or a Killer Sudoku, it is a Kenken
A kenken uses the four mathematical operands, numbers can repeat in a cage where the cells don't see each other
examplethe +11 cage in R1C1 can be 56 or 65 (Only one should be used in the one cage as they can be in any order)
the -3 cage in R1C4 could be 14, 41, 25, 52, 36, 63 (Only one should be used in the one cage as they can be in any order)
the x120 cage in R3C3 be 456, 465, 546, 564, 645, 654 (Only one should be used in the one cage as they can be in any order)
the /2 cage in R5C2 could be 12, 21, 24, 42 (Only one should be used in the one cage as they can be in any order)
The Puzzle was From The Times Kenken 2269