The gemora states on the bottom of 32b that when one leaves an Eruv on a tree above 10 Tefachim, it is valid but he may not take it on Shabbos (per Rashi), because he shevisa place gives him 4 Amos up to the sky. The gemora states that it is only invalid if he leaves it on a branch more that 4 Amos away from his shevisa place. Why do we not say the same here on 33A, that even a basket on a tree more that 4 wide that is considered a Reshus hayochid, his Eruv should be valid, as his own Reshus hayochid goes up to the sky as in the bottom of 32b?

Yanky, Lakewood NJ