Why do I always have to compromise, just because I'm the big brother. It's not fair.
Being big has its advantages and disadvantages. You get the best of everything. Undivided attention is only enjoyed by you. Your brother is playing with some of the toys that were bought for you at that age. And most importantly, we trust you more and hence put more responsibilities on you.
Now you may need to sometimes adjust or adapt to things to suit V. But it is a very small compromise to make when you look at the bigger picture of what you get in return- a lifelong friend and companion. He is there as your play buddy, your friend, your confidant and your brother forever. He will look up to you and love you no matter what. Isn't it worth it to give him the joy right now at the cost of very little adjustment at your end ?