Why could Led Flat Panel Well Replaced Old Light?Pls Kindly Find Difference As Below,

The right new white and brightner led flat panel save about 80% energy than left old troffer.

specifaciton: 

Features&Benefits: 

1. Isolated  Longbright brand power supply

2. Super Bright LM80 LED 0.5W 2835MD ,Ra>80

3. Lumen output:110-120lm/w and 125-130lm/w

4. Long bright brand isolated driver,PF>0.9 THD<15%

5. AC 100-277v,0-10V dimmable

6. PMMA LGP 3mm thick ,imported from Taiwan,Anti -Yellowing

7. Non -flicker,No glare,No dark spot,protect your eyes

8. 5-7days fast delievery once confirmed

9. UL CUL certifications

10. Ideal replacement for troditional troffer with over 80% energy saving

11. 5 years warranty