no 25 mbps is up not 100
yup
NO
Yes, 100mbps is fast enough for an online gaming connection.
As a general "good internet speed," most video game console manufacturers recommend at least 3 Mbps of download speed and 0.5 Mbps to 1 Mbps of upload speed. Source: Gospeedcheck
It depends on how much data is being sent back and forth in the first place, but generally yes. You will get less lag, but it won't neccesarily make the game itself run faster. You still need a good video card, plenty of RAM, and a good processor for games to run smoothly.
Probably above 5mbps to at LEAST play but you'll have a lag/Delay the best goes with 20mbps
For an Xbox, you only need 85 Mbps if you are online gaming. If you are streaming HD video from room to room, then you need 200 Mbps. 85 Mbps can be purchased as cheap as $77 form buy.com. Best Buy sells them for $99. It's great to see you are using powerline instead of wireless.
7.2 mbps will be fine.
It is above average. Most people have up to 20 mbps, and others have higher demand and have upwards of 40 mbps.
Its Fantastic
It will slow down to any devices connected to the 10 Mbps hub. Other connections should not be affected.
For most games, you should be fine on 1MBs/64KBs. However, this is the lowerlimit, so for the best experience dot do anything that uses up bandwith while gaming on this connection. This includes torrents, P2P, web browsing, or standard downloading/uploading.