centos 7: rsh permission denied when used with a command

Question

When I use rexec to a server, it work's but rsh does not. Any idea what could be wrong?

Using rexec

$ rexec 10.60.114.192 echo hi
Password: 
hi

Using rsh

$ rsh 10.60.114.192 echo hi
Permission denied.

I've followed https://www.itzgeek.com/how-tos/linux/centos-how-tos/setup-remote-shell-access-rsh-on-centos-7-rhel-7.html

rhosts.equiv

# cat /etc/rhosts.equiv 
+ + 

securetty

# cat /etc/securetty 
rsh
rexec
rlogin

UPDATE: oddly, I can log in via rsh

$ rsh 10.60.114.192 
Password: 
Last login: Mon Apr 23 06:11:04 on pts/0