Replaceable injectors and a separate computer you could use on some thing else. Sounds like an advantage to me, but not worth the cost.Realistically it is not a better design, but the same design. The Sniper includes the TB(hardware) . The terminator assumes you are installing it in an LS based vehicle (no hardware). But both are a plug n play giddyup. I believe the Terminator X had more I/O’s. , but not many lol.