Look up "Battlefield Friends - Broken Field" on YouTube. Happy Hour gives an amazing example of what is wrong, with added humor.

Battlefield is broken and has been since it released. The product was rushed out onto shelves before the deva finished it. Due to net code disasters, players are shot at and killed behind cover and through walls. Anyone and everyone who has played can say that has happened to them. Servers are constantly laggy and shut down randomly. Don't get me wrong, I play the crap out of it, but it does tiresome at times.