You're right, it takes care of what Defender used to do, so, it's not needed, but I don't think, in Windows 7, that there's actually a way to get rid of it. It's disabled automatically when MSE is installed.
System Manufacturer/Model Number Toshiba Satellite L455D OS Windows 7 Home Premium CPU Amd Semperon 2.10GHz Memory 2 Gig Graphics Card ATI Radeon 3100 Sound Card Realtek Monitor(s) Displays 15.6 inch Screen Resolution 1366x768
Mouse Logitech Wireless Hard Drives 250gig Internet Speed 16/2 cable
OS Windows 7 Professional x64 Backtrack 4 R2 CPU Intel Core i5-650 Motherboard Gigabyte P55-UD3 Memory 4 GB Geil PC3 12800 Graphics Card HIS HD 4870 X2 Sound Card Sound Blaster X-Fi Titanium Fatal1ty Champion Monitor(s) Displays BenQ 22" G2220HD
Keyboard Microsoft SideWinder X6 Mouse Razer Abyssus PSU Antec High Current Gamer 620W Power Supply Case Thermaltake Armor+ MX Hard Drives Seagate Barracuda 7200.12 500GB
Seagate Barracuda 7200.12 500GB
Defender is only an adware defense product. MSE takes care of adware and malware, so MSE essentially has defender built into it. Yes, MSE automatically disables defender. As long as Defender is disabled and MSE is on, you are very well protected. I am incredibly happy with MSE, it blocked a drive-by trojan once when I was on the web. Plus, it barely uses any resources.
System Manufacturer/Model Number Dell Studiio 1555 OS Windows 8 Pro CPU Core 2 Duo P8600 2.4 ghz Memory 4GB DDR2 Graphics Card ATI Radeon 4570 512MB Sound Card IDT High Definition Monitor(s) Displays 15.6" Screen Resolution 1920x1080
System Manufacturer/Model Number Bruce ... somewhere in his 40's OS Windows 7 Ultimate 32bit SP1 CPU Intel(R) Core(TM)2 Quad CPU @ 2.40GHz, 2400 MHz Motherboard INTEL/D975XBX2 Memory 4 GB Graphics Card ATI Radeon HD 2600 Pro Monitor(s) Displays Samsung SyncMaster 914v Screen Resolution 1280 x 1024
Keyboard Standard PS/2 Keyboard Mouse Microsoft PS/2 Mouse PSU Rocketfish 700 W Case G.Skill Gigabyte Chassis Hard Drives 2/500GB each ... ST3500630AS ATA Device.
One is not connected Internet Speed DSL Antivirus Avira Internet Security Browser IE 9 Other Info ATI HDMI Audio