Can you really loose 2lbs a week by just eating right?

Three pounds in 2 weeks is 1.5 lbs. per week, which isn't bad. Usually, your weight loss starts off faster and slows, but there are so many things that can influence it. Here are a few:

Are you eating too much sodium? Track this in your diary, if you aren't already--can be very eye opening.
Are you eating your exercise calories? If you have a large deficit each day, your body may hold on to the weight.
Prior to starting on MFP, have you been eating minimal calories "trying" to lose, and/or yo yo ing up and down?
If that is the case, your metabolism may be very sluggish and it will take a few weeks of increased cardio activity to speed it up and get your loss moving.

These are just some possibilities. I am sure you will get other ideas from other posters. Good luck.

I think you've been far too ambitious with your cardio. You need to adjust to something that you will stick with long term. And I have read loads of health blogs that insist on at least 1 day off per week for your body to recover.

Up to you, but I'd be more realistic with 30 mins, 5 days per week. But I do HIIT, so dont need more than that. Bit of a difference between high intensity and walking.

I guess it depends on what type of cardio your'e doing??

I have been using this web site for 16 weeks to lose 56 pounds. I am now about 6 pounds away from achieving that goal. I am not starving myself but I am cutting out rice, flour, sugar, and potatoes and keeping my calorie intake to no more than 1800 per day and my carbs to 115 gm/day. The results are that I have been losing on average about 3 pounds per week. It works. But it takes discipline to say "no" to the carbs I once inhaled without concern -- lots of discipline. I lost 6 inches around my hips and waist and now am 3 dress sizes smaller.

Yes!

Yes. As long as the calorie deficit is 1000 calories a day whether you exercise or you don't, the weight loss will be the same. Exercise has many other wonderful benefits but if you stick with a fixed calorie deficit (i.e. eat back your exercise calories) then it doesn't increase weight loss. There are some subtle nuances here because not all exercise calories are counted correctly at the time of exercise depending on the type and the under-count leads people to think exercise increases metabolism but it is really the body restoring the anaerobic energy reserves over the next 24-48 hours used during the 60 minute exercise .

I exercise for the fitness benefits and also I find that I need around 1400 calories a day to feel satisfied and not starving, whether I exercise or not. So I exercise to get my Total Daily Energy Expenditure up to 2400 calories so I can maintain my deficit. When I was 40 lbs more than I am now I didn't need exercise to be at 2400 calories per day but I did anyway because I was also trying to improve my fitness.

There is a risk, more so for women, that exercise will make you hungrier than the calories you burned so exercise can have a negative impact on weight loss for some people. Also maximizing fitness needs excess calories and weight loss needs a calorie deficit so they are competing goals and a balance needs to be struck. Daily diet controls weight loss and exercise controls fitness.