sFlow 5 sample / payload size inconsistency

sample.txt

InMon sFlow
    Datagram version: 5
    Agent address type: IPv4 (1)
    Agent address: 240.127.1.1
    Sub-agent ID: 100000
    Sequence number: 368791
    SysUptime: 6 days, 20 hours, 19 minutes, 11 seconds (591551010ms)
    NumSamples: 2
    Flow sample, seq 90601
        0000 0000 0000 0000 0000 .... .... .... = Enterprise: standard sFlow (0)
        .... .... .... .... .... 0000 0000 0001 = sFlow sample type: Flow sample (1)
        Sample length (byte): 184
        Sequence number: 90601
        0000 0000 .... .... .... .... .... .... = Source ID class: 0
        .... .... 0000 0000 0000 0000 0001 0001 = Index: 17
        Sampling rate: 1 out of 100000 packets
        Sample pool: 470165408 total packets
        Dropped packets: 0
        Input interface (ifIndex): 17
        Output interface: 0x0000000d
        Flow record: 1
        Raw packet header
            0000 0000 0000 0000 0000 .... .... .... = Enterprise: standard sFlow (0)
            Format: Raw packet header (1)
            Flow data length (byte): 144
            Header protocol: Ethernet (1)
            Frame Length: 132
            Payload removed: 4
            Original packet length: 128
            Header of sampled packet: …
                Ethernet II, Src: Cisco_1a:36:f7 (b0:8b:cf:1a:36:f7), Dst: JuniperN_bb:89:cb (fc:96:43:bb:89:cb)
                802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 1991
                Internet Protocol Version 4, Src: X.Y.Z.A, Dst: X.Y.Z.B
                    0100 .... = Version: 4
                    .... 0101 = Header Length: 20 bytes (5)
                    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
                    Total Length: 1480
                    Identification: 0xd6a9 (54953)
                    Flags: 0x00
                    Fragment Offset: 0
                    Time to Live: 63
                    Protocol: UDP (17)
                    Header Checksum: 0x87fa [validation disabled]
                    [Header checksum status: Unverified]
                    Source Address: X.Y.Z.A
                    Destination Address: X.Y.Z.B
                User Datagram Protocol, Src Port: 61580, Dst Port: 9930
                    Source Port: 61580
                    Destination Port: 9930
                    Length: 1460
                    Checksum: 0xcaff [unverified]
                    [Checksum Status: Unverified]
                    [Stream index: 7]
                    UDP payload (82 bytes)